There are limitations to how and how much can you acquire of Propane and Gas. Container law has been a thing forever, and differently to guns, it's a tool to solely serve comfort and basic things like power and heat in some places that may not have them. And if they're comparable because you can *try* make bombs with them, the actual attempts at that are incredibly small especially if comared to firearms, and then most of those attempts have been foiled or been hardly as effective as too many games have made us think. If you're against such minor inconveniences when they could make your contry even just a tad safer, you're not being righteous, you're just being selfish and perhaps even lazy.
I can't say I really give a shit for people that have been over 200 years dead, and I see as incredibly stupid how should their philosophy be nothing but obsolete in the present. It's not like the US can really preach for "right to life, liberty, and property, by virtue of being human" seeing its history, or even present. And it's cute to think that God bestowed these constitutional rights, but it's not worth shit. At best, God signed his name on it and fucked off, he can't be held accountable for anything and that's what any remotely democratic country should at least have. Pretty sure that most fascist regimes were also "supperted" by God, for how much that's worth.